The Hercules beetle is one of the largest beetles known, reaching up to 6. 75 inches. Do they undergo complete metamorphosis? Do ferns have seeds? When did they first evolve? What animal is the closest living relative of spiders and scorpions (Arachnida)? Who evolved first, the stegasaurus which was a reptile or the sea urchin? Are spiders insects? The evolution of a water-tight egg allowed animals to live fully on land. Which two living groups evolved to living back in the water full time? Are dolphins and whales more closely related to hippos or manatees? Is a snake a tetrapod? Are birds more closely related to bats or crocodiles? What kind of seeds does a water lily have? Is a sponge an animal? There are over 5, 000 quills on the average hedgehog. Are hedgehogs more closely related to primates or armadillos? Do lampreys have jaws? When did they evolve? There are 4, 800 recorded species of frogs. What living group of animals are they most closely related to, and when did they share a common ancestor? Elephant shrews are they more closely related to elephants or shrews? Wings are an example of “convergent evolution” where different animal groups evolved wings separetly. Show 3 groups with different kinds of wings. Is Rhodophyta, or red algae, a plant? How about brown algae? Elephants are the largest living terrestrial animals. Who are their closest living relatives? Do all insects have wings? When did wings first evolve in insects? Cephalopods are regarded as the most intelligent of the invertebrates. Are they more closely related to jellyfish or clams? This bass has ray-fins. Name two groups of fish that have lobe-fins instead of ray-fins. Horseshoe crabs evolved 450 million years ago. Are they more closely related to spiders or crabs? When did plants adapt to land? What trait evolved that helped them do that? Asteroidea are found in all the world’s oceans. During what geological perod did they evolve? When was the last common ancestor of cats and catfish?